title: Lumostatic strategy for microalgae cultivation utilizing image analysis and chlorophyll a content as design parameters.
abstract: Cultivation of microalgae Chlorella sp. was performed in draft-tube photobioreactors. Effect of light intensity on the microalgae growth performance was conducted under a light intensity range of 82-590 μmol/m(2)s. A lumostatic strategy was proposed based on the light distribution profiles obtained by image analysis and specific chlorophyll a content. The proposed lumostatic strategy allowed a maximum biomass dry weight of 5.78 g/L and a productivity of 1.29 g/Ld, which were 25.7% and 74.3% higher than that achieved by the optimal constant light intensity, respectively. A comparison with other lumostatic strategies reported in the literature indicated that the proposed lumostatic strategy in the current study can be a promising approach in improving the growth of microalgae.
authors.affiliation: Nangyang Technological University, Singapore School of Chemical and Biomedical Engineering, 62 Nanyang Drive, Singapore 637459, Singapore.
authors.forename: Xue
authors.initials: X
authors.lastname: Chen
authors.forename: Qianru Yvonne
authors.initials: QY
authors.lastname: Goh
authors.forename: Weifeng
authors.initials: W
authors.lastname: Tan
authors.forename: Iqbal
authors.initials: I
authors.lastname: Hossain
authors.forename: Wei Ning
authors.initials: WN
authors.lastname: Chen
authors.forename: Raymond
authors.initials: R
authors.lastname: Lau
mesh_terms: D018533:Biomass; D019149:Bioreactors; D002708:Chlorella / Q000378:metabolism*; D002734:Chlorophyll / Q000378:metabolism*; D000077194:Chlorophyll A; D006863:Hydrogen-Ion Concentration; D008027:Light
chemical_list: D002734:Chlorophyll; D000077194:Chlorophyll A